The angle between the lines 2x=3y=-z  and 6x=-y=-4z  is

  • Option 1)

    90º

  • Option 2)

  • Option 3)

    30º

  • Option 4)

    45º

 

Answers (1)

As we learnt in 

Condition for perpendicularity -

\vec{n}.\vec{n_{1}}= 0 or a_{1}a_{2}+b_{1}b_{2}+c_{1}c_{2}=0

-

 

 Since a_{1}a_{2}+b_{1}b_{2}+c_{1}c_{2}=0

Angle between the lines= 90\degree


Option 1)

90º

Correct Option

 

Option 2)

Incorrect Option

 

Option 3)

30º

Incorrect Option

 

Option 4)

45º

Incorrect Option

 

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